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Time sensitive transmission and bandwidth optimization utilization-based method used under IEEE802.15.4 network environment

A time-sensitive, network environment technology, applied in the field of wireless interface technology, management mechanism, MAC layer protocol

Active Publication Date: 2011-01-12
XIANGTAN UNIV
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  • Abstract
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Problems solved by technology

It can only access wireless channels by time division multiplexing (TDMA), and can only work in a specific channel at a specific time

Method used

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  • Time sensitive transmission and bandwidth optimization utilization-based method used under IEEE802.15.4 network environment
  • Time sensitive transmission and bandwidth optimization utilization-based method used under IEEE802.15.4 network environment
  • Time sensitive transmission and bandwidth optimization utilization-based method used under IEEE802.15.4 network environment

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Embodiment Construction

[0040] Such as figure 1 As shown, the architecture diagram of the whole function of the present invention mainly includes three modules: a slave node information collection module, a slave node information processing and management module, and a master node scheduling implementation module.

[0041](1) Slave node information collection module: the function of this module is to collect the time length value of each slave node GTS, the number of time slots contained in each GTS, the time limit value of each service to be transmitted, the length of the data to be propagated, Packet propagation rate, the distance from node to cluster head, the propagation rate of packet data in the air and other information. The slave node information collection module needs to process the information initially, and then pass it to the slave node information processing and management module.

[0042] (2) Slave node information processing, management module: the function of this module is to carry...

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Abstract

The invention discloses a time sensitive transmission and bandwidth optimization utilization-based method used under an IEEE802.15.4 network environment, which comprises the following steps of: firstly, considering a time period Di of transmission data of different nodes and time ED (i) occupied by transmission; and secondly, allocating GTS for each node, reallocating GTS (UGTS) which is not usedin the last scheduling process by an effective method, and improving the GTS utilization rate so as to improve the bandwidth utilization rate. The method has the advantages of good performance in theprocess of transmitting time sensitive service and convenient implementation at a user terminal.

Description

technical field [0001] The invention relates to the wireless interface technology, management mechanism and MAC layer protocol of the IEEE 802.15.4 network, especially its scheduling algorithm. Background technique [0002] With the continuous development of economy and society, people are more and more interested in the research of IEEE 802.15.4 network with low energy consumption and low speed, because it has great application prospects in military, mining, home automation and medical care. . [0003] A complete IEEE 802.15.4 network consists of several or more piconets. A piconet consists of multiple individual nodes, which can be further divided into master nodes and slave nodes. A master node can exchange data with 7 active slave nodes at the same time. These piconets can be interconnected to form larger scatternets. The application of frequency modulation technology can make the nodes in the IEEE 802.15.4 network exist in a certain area with high density. [0004] ...

Claims

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Application Information

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IPC IPC(8): H04W28/06H04W28/16
Inventor 裴廷睿曹江莲李哲涛唐张杰田淑娟
Owner XIANGTAN UNIV
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